Appendix B.   Geographic Reporting Levels for EIA Data

EIA currently collects and publishes data at different geographic levels depending on the type of fuel or energy source (e.g. petroleum, natural gas, coal, uranium, renewables, and electricity) and the type of data being reported, such as prices, reserves, supply, distribution, trade and marketing, consumption, sales, and end use.  Only data relevant to a given State are collected and reported for that State because not all States have production plants, refineries, storage facilities, pipelines, ports, etc.  Additionally, insufficient sample sizes can prohibit State-level aggregations, as discussed in Chapter 5, and some data are more easily interpreted if they are reported by regions or districts that are associated with established production, marketing, or transmission boundaries.  Some data are available by both State and by region, other data are available by region alone.  For example:

• Much of EIA’s petroleum data are reported at the five Petroleum Administration for Defense Districts (PADD) in addition to U.S and State levels (see map below).

• EIA’s Energy Consumption Surveys are reported primarily at the Census Divisions and Regions level (see map below).

• EIA’s Electric Power Annual reports summer and winter data at the NERC (North American Electric Reliability Council) region level (see map below).